Small cell lung cancer (SCLC) is characterized by aggressive and rapid growth and a tendency to develop early spread to distant sites including mediastinal lymph nodes, liver, bones, adrenal glands, and brain. The purpose of this study is to assess safety, tolerability, and change in disease activity of ABBV-706 compared to standard of care (SOC) treatment (topotecan, lurbinectedin, or amrubicin).
ABBV-706 is an investigational drug being developed for the treatment of SCLC. There are two treatment arms in this study. Participants will either receive ABBV-706 or SOC. Approximately 531 adult participants will be enrolled in the study across 175 sites worldwide.
Participants with SCLC will receive intravenous (IV) ABBV-706 or SOC \[topotecan (IV or orally), or lubinectedin (IV), or amrubicin (IV)\]. The estimated duration of the study is approximately 53 months.
There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic and may require frequent medical assessments, blood tests, questionnaires, and scans.
Diagnosis of histologically or cytologically confirmed Relapsed/Refractory (R/R) Small Cell Lung Cancer (SCLC).
In the 1L and 2L setting respectively, platinum-based chemotherapy (i.e., carboplatin or cisplatin and etoposide with CPI, if eligible for CPI) and 2L tarlatamab; or
In the 1L and 2L setting, platinum-based chemotherapy (i.e., carboplatin and etoposide with atezolizumab and lurbinectedin in combination with atezolizumab maintenance and 2L tarlatamab; or
In the 1L setting, platinum-based chemotherapy (i.e., carboplatin or cisplatin and etoposide with CPI if eligible) in combination with tarlatamab in frontline induction and/or maintenance
Participants with known active/symptomatic central nervous system metastases.
Participants with a history of interstitial lung disease (ILD) or pneumonitis that previously required treatment with systemic steroids, or any evidence of active ILD/pneumonitis on screening chest computed tomography (CT) scan.
Participants with any clinically significant conditions that would adversely affect the participation in the study, and the subject should have a life expectancy of at least 3 months.
Participants who have received prior treatment with a seizure-related 6 homolog (SEZ6) targeted Antibody drug conjugate (ADC), other targeted ADCs, or any other investigational agent not including tarlatamab in 1L.
Parallel
ABBV-706
DrugIntravenous (IV) Infusion
Topotecan
DrugIV Infusion
Topotecan
DrugOral
Lurbinectedin
DrugIV Infusion
Amrubicin
DrugIV Infusion
Objective Response (OR) as Measured by Overall Response Rate (ORR) Based on Blinded Independent Central Review (BICR)
OR is defined as participants achieving a best overall response (BOR) of confirmed complete response (CR)/partial response (PR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 as determined by BICR assessment prior to initiation of subsequent anti-cancer therapy. OR will be summarized by ORR, defined as the percentage of participants achieving OR and will be summarized for each arm with its associated 95% confidence interval (CI).
Overall Survival (OS)
OS is defined as the time from the date of randomization to the date of death of any cause.
Progression-free survival (PFS) based on BICR assessment per RECIST v1.1.
PFS is defined as the time from the date of randomization to the first documentation of radiographic disease progression per RECIST v1.1 based on BICR assessment or death from any cause, whichever occurs first.
Duration of response (DoR) based on BICR assessment per RECIST v1.1.
DoR is defined as the time from the initial response of confirmed CR or PR per RECIST v1.1 based on BICR assessment to radiographic disease progression per RECIST v1.1 based on BICR assessment, or death of any cause, whichever occurs first.
Change from baseline at Week 12 in physical functioning as measured by the physical functioning domain of the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30).
Health-related quality-of-life (HRQoL) and symptoms will be assessed with the EORTC QLQ-C30, version 3.0. The EORTC QLQ-C30 is a 30-item patient-reported questionnaire composed of both multi-item and single scales including 5 functional scales (physical, role, emotional, social, and cognitive), 3 symptom scales (fatigue, nausea and vomiting, and pain), a global health status (GHS)/QoL scale, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). Participants rate items on a 4 point scale ranging from 1 to 4 (1 = Not at All, 2 = A Little, 3 = Quite a Bit, and 4 = Very Much).
Change from baseline at Week 12 in Global Health Status (GHS)/Quality of life (QoL) as measured by the EORTC QLQ-C30 GHS/QoL scale
Health-related quality-of-life and symptoms will be assessed with the EORTC QLQ-C30, version 3.0. The EORTC QLQ-C30 is a 30-item patient-reported questionnaire composed of both multi-item and single scales including 5 functional scales (physical, role, emotional, social, and cognitive), 3 symptom scales (fatigue, nausea and vomiting, and pain), a GHS/QoL scale, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). Participants rate items on a 4 point scale ranging from 1 to 4 (1 = Not at All, 2 = A Little, 3 = Quite a Bit, and 4 = Very Much).